Battery

4LR44

6V alkaline cell

4LR44 is a 6-volt alkaline photographic stack cell (about 13 × 25 mm). Packs may say A544. PX28 / 4SR44 are the same outer size with silver-oxide chemistry — not an automatic swap for metering behaviour. This is not a 1.35V PX625 mercury button cell.

Chemistry: alkaline
Voltage: 6 V
Diameter: 13 mm
Length: 25.2 mm
Used by: 4 devices

Common uses: Film SLR cameras · Photographic equipment

4LR44 Diagram

Brand-neutral outline — confirm the tray in your device.

Other names

Genuine aliases and pack labels for this battery — not substitutes of a different chemistry.

A544 · 544 · PX28A · 4G13 alkaline

Related codes

Same battery / other names

4LR44544

Also sold as

Numeric pack label often used for 6V photo cells — confirm chemistry on the pack

4LR44A544

Also sold as

Retail / ANSI-style label commonly used for 4LR44-class 6V alkaline photo cells

Same size, different battery

4LR44PX28

Same size, different type

Same 6V photo-cell form factor; 4LR44 alkaline vs PX28 silver oxide — not automatic behavioural equivalents

Commonly confused with

4LR44PX625

Not a substitute

Different voltage and form factor — 6V photo stack vs 1.35V mercury meter cell

Size family

Edge thickness in the 13 mm family — thicker bar means thicker cell. Not to scale. Highlighted cell is this page.

4LR44

25.2 mm

PX28

25.2 mm

Device-specific caveats

From manufacturer-backed notes on devices that use 4LR44 — not generic advice.

Keep cells away from children.

Devices using 4LR44

3 / 4

All (4)Film cameras (4)Canon (3)

Used in

Film cameras4 devices

Brands: Canon

Compare

PX28 vs 4LR44Compare

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Testers & chargers

Optional tools that fit this cell type — only where the chemistry allows. Separate from the battery answer.

Amazon links may earn us a commission. They do not change the battery answer.

Fluke 101 Digital Multimeter
Accurate open-circuit voltage and basic electrical checks
Docs Buy on Amazon More tools
Klein Tools MM400 Multimeter
General DC voltage checks including battery terminals
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AstroAI DM6000AR Digital Multimeter
Budget auto-ranging voltage checks
Docs Buy on Amazon More tools

Battery tester
Quick good / low / dead check for household cells
Crude check only — does not measure capacity under realistic load.
How to test a battery Buy on Amazon

Buy links are optional and separate from the battery answer.

Need one?

Need a 4LR44?

Search Amazon for packs of this battery code.

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Notes

6V alkaline photographic stack (four LR44-class cells in series form factor). Common modern cell for Canon AE-1 / AE-1 Program. Same outer size family as PX28 / 4SR44 (silver oxide) and PX28L (lithium) — chemistry differs. Not a 1.35V PX625 mercury cell.